haven/nexgb/shape/shape.go

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// Package shape is the X client API for the SHAPE extension.
package shape
// This file is automatically generated from shape.xml. Edit at your peril!
import (
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xgb "janouch.name/haven/nexgb"
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"janouch.name/haven/nexgb/xproto"
)
const (
MajorVersion = 1
MinorVersion = 1
)
// Init must be called before using the SHAPE extension.
func Init(c *xgb.Conn) error {
reply, err := xproto.QueryExtension(c, 5, "SHAPE").Reply()
switch {
case err != nil:
return err
case !reply.Present:
return xgb.Errorf("No extension named SHAPE could be found on on the server.")
}
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c.ExtLock.Lock()
c.Extensions["SHAPE"] = reply.MajorOpcode
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c.ExtLock.Unlock()
for evNum, fun := range xgb.NewExtEventFuncs["SHAPE"] {
xgb.NewEventFuncs[int(reply.FirstEvent)+evNum] = fun
}
for errNum, fun := range xgb.NewExtErrorFuncs["SHAPE"] {
xgb.NewErrorFuncs[int(reply.FirstError)+errNum] = fun
}
return nil
}
func init() {
xgb.NewExtEventFuncs["SHAPE"] = make(map[int]xgb.NewEventFun)
xgb.NewExtErrorFuncs["SHAPE"] = make(map[int]xgb.NewErrorFun)
}
type Kind byte
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// Notify is the event number for a NotifyEvent.
const Notify = 0
type NotifyEvent struct {
Sequence uint16
ShapeKind Kind
AffectedWindow xproto.Window
ExtentsX int16
ExtentsY int16
ExtentsWidth uint16
ExtentsHeight uint16
ServerTime xproto.Timestamp
Shaped bool
// padding: 11 bytes
}
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// NotifyEventNew constructs a NotifyEvent value that implements xgb.Event from a byte slice.
func NotifyEventNew(buf []byte) xgb.Event {
v := NotifyEvent{}
b := 1 // don't read event number
v.ShapeKind = Kind(buf[b])
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.AffectedWindow = xproto.Window(xgb.Get32(buf[b:]))
b += 4
v.ExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.ExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.ExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.ExtentsHeight = xgb.Get16(buf[b:])
b += 2
v.ServerTime = xproto.Timestamp(xgb.Get32(buf[b:]))
b += 4
if buf[b] == 1 {
v.Shaped = true
} else {
v.Shaped = false
}
b += 1
b += 11 // padding
return v
}
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// Bytes writes a NotifyEvent value to a byte slice.
func (v NotifyEvent) Bytes() []byte {
buf := make([]byte, 32)
b := 0
// write event number
buf[b] = 0
b += 1
buf[b] = byte(v.ShapeKind)
b += 1
b += 2 // skip sequence number
xgb.Put32(buf[b:], uint32(v.AffectedWindow))
b += 4
xgb.Put16(buf[b:], uint16(v.ExtentsX))
b += 2
xgb.Put16(buf[b:], uint16(v.ExtentsY))
b += 2
xgb.Put16(buf[b:], v.ExtentsWidth)
b += 2
xgb.Put16(buf[b:], v.ExtentsHeight)
b += 2
xgb.Put32(buf[b:], uint32(v.ServerTime))
b += 4
if v.Shaped {
buf[b] = 1
} else {
buf[b] = 0
}
b += 1
b += 11 // padding
return buf
}
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// SequenceId returns the sequence id attached to the Notify event.
// Events without a sequence number (KeymapNotify) return 0.
// This is mostly used internally.
func (v NotifyEvent) SequenceId() uint16 {
return v.Sequence
}
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// String is a rudimentary string representation of NotifyEvent.
func (v NotifyEvent) String() string {
fieldVals := make([]string, 0, 9)
fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", v.Sequence))
fieldVals = append(fieldVals, xgb.Sprintf("ShapeKind: %d", v.ShapeKind))
fieldVals = append(fieldVals, xgb.Sprintf("AffectedWindow: %d", v.AffectedWindow))
fieldVals = append(fieldVals, xgb.Sprintf("ExtentsX: %d", v.ExtentsX))
fieldVals = append(fieldVals, xgb.Sprintf("ExtentsY: %d", v.ExtentsY))
fieldVals = append(fieldVals, xgb.Sprintf("ExtentsWidth: %d", v.ExtentsWidth))
fieldVals = append(fieldVals, xgb.Sprintf("ExtentsHeight: %d", v.ExtentsHeight))
fieldVals = append(fieldVals, xgb.Sprintf("ServerTime: %d", v.ServerTime))
fieldVals = append(fieldVals, xgb.Sprintf("Shaped: %t", v.Shaped))
return "Notify {" + xgb.StringsJoin(fieldVals, ", ") + "}"
}
func init() {
xgb.NewExtEventFuncs["SHAPE"][0] = NotifyEventNew
}
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type Op byte
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const (
SkBounding = 0
SkClip = 1
SkInput = 2
)
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const (
SoSet = 0
SoUnion = 1
SoIntersect = 2
SoSubtract = 3
SoInvert = 4
)
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// Skipping definition for base type 'Bool'
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// Skipping definition for base type 'Byte'
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// Skipping definition for base type 'Card8'
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// Skipping definition for base type 'Char'
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// Skipping definition for base type 'Void'
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// Skipping definition for base type 'Double'
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// Skipping definition for base type 'Float'
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// Skipping definition for base type 'Int16'
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// Skipping definition for base type 'Int32'
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// Skipping definition for base type 'Int8'
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// Skipping definition for base type 'Card16'
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// Skipping definition for base type 'Card32'
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// CombineCookie is a cookie used only for Combine requests.
type CombineCookie struct {
*xgb.Cookie
}
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// Combine sends an unchecked request.
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// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func Combine(c *xgb.Conn, Operation Op, DestinationKind, SourceKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceWindow xproto.Window) CombineCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Combine' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, false)
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c.NewRequest(combineRequest(c, Operation, DestinationKind, SourceKind, DestinationWindow, XOffset, YOffset, SourceWindow), cookie)
return CombineCookie{cookie}
}
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// CombineChecked sends a checked request.
// If an error occurs, it can be retrieved using CombineCookie.Check.
func CombineChecked(c *xgb.Conn, Operation Op, DestinationKind, SourceKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceWindow xproto.Window) CombineCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Combine' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, false)
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c.NewRequest(combineRequest(c, Operation, DestinationKind, SourceKind, DestinationWindow, XOffset, YOffset, SourceWindow), cookie)
return CombineCookie{cookie}
}
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// Check returns an error if one occurred for checked requests that are not expecting a reply.
// This cannot be called for requests expecting a reply, nor for unchecked requests.
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func (cook CombineCookie) Check() error {
return cook.Cookie.Check()
}
// combineRequest writes a Combine request to a byte slice for transfer.
func combineRequest(c *xgb.Conn, Operation Op, DestinationKind, SourceKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceWindow xproto.Window) []byte {
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size := 20
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
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buf[b] = 3 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
buf[b] = byte(Operation)
b += 1
buf[b] = byte(DestinationKind)
b += 1
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buf[b] = byte(SourceKind)
b += 1
b += 1 // padding
xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
xgb.Put16(buf[b:], uint16(XOffset))
b += 2
xgb.Put16(buf[b:], uint16(YOffset))
b += 2
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xgb.Put32(buf[b:], uint32(SourceWindow))
b += 4
return buf
}
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// GetRectanglesCookie is a cookie used only for GetRectangles requests.
type GetRectanglesCookie struct {
*xgb.Cookie
}
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// GetRectangles sends a checked request.
// If an error occurs, it will be returned with the reply by calling GetRectanglesCookie.Reply.
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func GetRectangles(c *xgb.Conn, Window xproto.Window, SourceKind Kind) GetRectanglesCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'GetRectangles' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
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cookie := c.NewCookie(true, true)
c.NewRequest(getRectanglesRequest(c, Window, SourceKind), cookie)
return GetRectanglesCookie{cookie}
}
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// GetRectanglesUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func GetRectanglesUnchecked(c *xgb.Conn, Window xproto.Window, SourceKind Kind) GetRectanglesCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'GetRectangles' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
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cookie := c.NewCookie(false, true)
c.NewRequest(getRectanglesRequest(c, Window, SourceKind), cookie)
return GetRectanglesCookie{cookie}
}
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// GetRectanglesReply represents the data returned from a GetRectangles request.
type GetRectanglesReply struct {
Sequence uint16 // sequence number of the request for this reply
Length uint32 // number of bytes in this reply
Ordering byte
RectanglesLen uint32
// padding: 20 bytes
Rectangles []xproto.Rectangle // size: xgb.Pad((int(RectanglesLen) * 8))
}
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// Reply blocks and returns the reply data for a GetRectangles request.
func (cook GetRectanglesCookie) Reply() (*GetRectanglesReply, error) {
buf, err := cook.Cookie.Reply()
if err != nil {
return nil, err
}
if buf == nil {
return nil, nil
}
return getRectanglesReply(buf), nil
}
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// getRectanglesReply reads a byte slice into a GetRectanglesReply value.
func getRectanglesReply(buf []byte) *GetRectanglesReply {
v := new(GetRectanglesReply)
b := 1 // skip reply determinant
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v.Ordering = buf[b]
b += 1
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v.Sequence = xgb.Get16(buf[b:])
b += 2
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v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.RectanglesLen = xgb.Get32(buf[b:])
b += 4
b += 20 // padding
v.Rectangles = make([]xproto.Rectangle, v.RectanglesLen)
b += xproto.RectangleReadList(buf[b:], v.Rectangles)
return v
}
// getRectanglesRequest writes a GetRectangles request to a byte slice for transfer.
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func getRectanglesRequest(c *xgb.Conn, Window xproto.Window, SourceKind Kind) []byte {
size := 12
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
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buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
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buf[b] = 8 // request opcode
b += 1
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xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
xgb.Put32(buf[b:], uint32(Window))
b += 4
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buf[b] = byte(SourceKind)
b += 1
b += 3 // padding
return buf
}
// InputSelectedCookie is a cookie used only for InputSelected requests.
type InputSelectedCookie struct {
*xgb.Cookie
}
// InputSelected sends a checked request.
// If an error occurs, it will be returned with the reply by calling InputSelectedCookie.Reply.
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func InputSelected(c *xgb.Conn, DestinationWindow xproto.Window) InputSelectedCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
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if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'InputSelected' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, true)
c.NewRequest(inputSelectedRequest(c, DestinationWindow), cookie)
return InputSelectedCookie{cookie}
}
// InputSelectedUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func InputSelectedUnchecked(c *xgb.Conn, DestinationWindow xproto.Window) InputSelectedCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
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if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'InputSelected' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, true)
c.NewRequest(inputSelectedRequest(c, DestinationWindow), cookie)
return InputSelectedCookie{cookie}
}
// InputSelectedReply represents the data returned from a InputSelected request.
type InputSelectedReply struct {
Sequence uint16 // sequence number of the request for this reply
Length uint32 // number of bytes in this reply
Enabled bool
}
// Reply blocks and returns the reply data for a InputSelected request.
func (cook InputSelectedCookie) Reply() (*InputSelectedReply, error) {
buf, err := cook.Cookie.Reply()
if err != nil {
return nil, err
}
if buf == nil {
return nil, nil
}
return inputSelectedReply(buf), nil
}
// inputSelectedReply reads a byte slice into a InputSelectedReply value.
func inputSelectedReply(buf []byte) *InputSelectedReply {
v := new(InputSelectedReply)
b := 1 // skip reply determinant
if buf[b] == 1 {
v.Enabled = true
} else {
v.Enabled = false
}
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
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v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
return v
}
// inputSelectedRequest writes a InputSelected request to a byte slice for transfer.
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func inputSelectedRequest(c *xgb.Conn, DestinationWindow xproto.Window) []byte {
size := 8
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
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buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
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b += 1
buf[b] = 7 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
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xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
return buf
}
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// MaskCookie is a cookie used only for Mask requests.
type MaskCookie struct {
*xgb.Cookie
}
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// Mask sends an unchecked request.
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// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func Mask(c *xgb.Conn, Operation Op, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceBitmap xproto.Pixmap) MaskCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Mask' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, false)
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c.NewRequest(maskRequest(c, Operation, DestinationKind, DestinationWindow, XOffset, YOffset, SourceBitmap), cookie)
return MaskCookie{cookie}
}
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// MaskChecked sends a checked request.
// If an error occurs, it can be retrieved using MaskCookie.Check.
func MaskChecked(c *xgb.Conn, Operation Op, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceBitmap xproto.Pixmap) MaskCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Mask' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, false)
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c.NewRequest(maskRequest(c, Operation, DestinationKind, DestinationWindow, XOffset, YOffset, SourceBitmap), cookie)
return MaskCookie{cookie}
}
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// Check returns an error if one occurred for checked requests that are not expecting a reply.
// This cannot be called for requests expecting a reply, nor for unchecked requests.
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func (cook MaskCookie) Check() error {
return cook.Cookie.Check()
}
// maskRequest writes a Mask request to a byte slice for transfer.
func maskRequest(c *xgb.Conn, Operation Op, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16, SourceBitmap xproto.Pixmap) []byte {
size := 20
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
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buf[b] = 2 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
buf[b] = byte(Operation)
b += 1
buf[b] = byte(DestinationKind)
b += 1
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b += 2 // padding
xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
xgb.Put16(buf[b:], uint16(XOffset))
b += 2
xgb.Put16(buf[b:], uint16(YOffset))
b += 2
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xgb.Put32(buf[b:], uint32(SourceBitmap))
b += 4
return buf
}
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// OffsetCookie is a cookie used only for Offset requests.
type OffsetCookie struct {
*xgb.Cookie
}
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// Offset sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func Offset(c *xgb.Conn, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16) OffsetCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'Offset' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, false)
c.NewRequest(offsetRequest(c, DestinationKind, DestinationWindow, XOffset, YOffset), cookie)
return OffsetCookie{cookie}
}
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// OffsetChecked sends a checked request.
// If an error occurs, it can be retrieved using OffsetCookie.Check.
func OffsetChecked(c *xgb.Conn, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16) OffsetCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'Offset' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, false)
c.NewRequest(offsetRequest(c, DestinationKind, DestinationWindow, XOffset, YOffset), cookie)
return OffsetCookie{cookie}
}
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// Check returns an error if one occurred for checked requests that are not expecting a reply.
// This cannot be called for requests expecting a reply, nor for unchecked requests.
func (cook OffsetCookie) Check() error {
return cook.Cookie.Check()
}
// offsetRequest writes a Offset request to a byte slice for transfer.
func offsetRequest(c *xgb.Conn, DestinationKind Kind, DestinationWindow xproto.Window, XOffset, YOffset int16) []byte {
size := 16
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
buf[b] = 4 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
buf[b] = byte(DestinationKind)
b += 1
b += 3 // padding
xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
xgb.Put16(buf[b:], uint16(XOffset))
b += 2
xgb.Put16(buf[b:], uint16(YOffset))
b += 2
return buf
}
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// QueryExtentsCookie is a cookie used only for QueryExtents requests.
type QueryExtentsCookie struct {
*xgb.Cookie
}
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// QueryExtents sends a checked request.
// If an error occurs, it will be returned with the reply by calling QueryExtentsCookie.Reply.
func QueryExtents(c *xgb.Conn, DestinationWindow xproto.Window) QueryExtentsCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'QueryExtents' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, true)
c.NewRequest(queryExtentsRequest(c, DestinationWindow), cookie)
return QueryExtentsCookie{cookie}
}
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// QueryExtentsUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func QueryExtentsUnchecked(c *xgb.Conn, DestinationWindow xproto.Window) QueryExtentsCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'QueryExtents' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, true)
c.NewRequest(queryExtentsRequest(c, DestinationWindow), cookie)
return QueryExtentsCookie{cookie}
}
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// QueryExtentsReply represents the data returned from a QueryExtents request.
type QueryExtentsReply struct {
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Sequence uint16 // sequence number of the request for this reply
Length uint32 // number of bytes in this reply
// padding: 1 bytes
BoundingShaped bool
ClipShaped bool
// padding: 2 bytes
BoundingShapeExtentsX int16
BoundingShapeExtentsY int16
BoundingShapeExtentsWidth uint16
BoundingShapeExtentsHeight uint16
ClipShapeExtentsX int16
ClipShapeExtentsY int16
ClipShapeExtentsWidth uint16
ClipShapeExtentsHeight uint16
}
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// Reply blocks and returns the reply data for a QueryExtents request.
func (cook QueryExtentsCookie) Reply() (*QueryExtentsReply, error) {
buf, err := cook.Cookie.Reply()
if err != nil {
return nil, err
}
if buf == nil {
return nil, nil
}
return queryExtentsReply(buf), nil
}
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// queryExtentsReply reads a byte slice into a QueryExtentsReply value.
func queryExtentsReply(buf []byte) *QueryExtentsReply {
v := new(QueryExtentsReply)
b := 1 // skip reply determinant
b += 1 // padding
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
if buf[b] == 1 {
v.BoundingShaped = true
} else {
v.BoundingShaped = false
}
b += 1
if buf[b] == 1 {
v.ClipShaped = true
} else {
v.ClipShaped = false
}
b += 1
b += 2 // padding
v.BoundingShapeExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.BoundingShapeExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.BoundingShapeExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.BoundingShapeExtentsHeight = xgb.Get16(buf[b:])
b += 2
v.ClipShapeExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.ClipShapeExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.ClipShapeExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.ClipShapeExtentsHeight = xgb.Get16(buf[b:])
b += 2
return v
}
// queryExtentsRequest writes a QueryExtents request to a byte slice for transfer.
func queryExtentsRequest(c *xgb.Conn, DestinationWindow xproto.Window) []byte {
size := 8
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
buf[b] = 5 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
return buf
}
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// QueryVersionCookie is a cookie used only for QueryVersion requests.
type QueryVersionCookie struct {
*xgb.Cookie
}
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// QueryVersion sends a checked request.
// If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply.
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func QueryVersion(c *xgb.Conn) QueryVersionCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, true)
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c.NewRequest(queryVersionRequest(c), cookie)
return QueryVersionCookie{cookie}
}
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// QueryVersionUnchecked sends an unchecked request.
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// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
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func QueryVersionUnchecked(c *xgb.Conn) QueryVersionCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, true)
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c.NewRequest(queryVersionRequest(c), cookie)
return QueryVersionCookie{cookie}
}
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// QueryVersionReply represents the data returned from a QueryVersion request.
type QueryVersionReply struct {
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Sequence uint16 // sequence number of the request for this reply
Length uint32 // number of bytes in this reply
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// padding: 1 bytes
MajorVersion uint16
MinorVersion uint16
}
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// Reply blocks and returns the reply data for a QueryVersion request.
func (cook QueryVersionCookie) Reply() (*QueryVersionReply, error) {
buf, err := cook.Cookie.Reply()
if err != nil {
return nil, err
}
if buf == nil {
return nil, nil
}
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return queryVersionReply(buf), nil
}
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// queryVersionReply reads a byte slice into a QueryVersionReply value.
func queryVersionReply(buf []byte) *QueryVersionReply {
v := new(QueryVersionReply)
b := 1 // skip reply determinant
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b += 1 // padding
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
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v.MajorVersion = xgb.Get16(buf[b:])
b += 2
v.MinorVersion = xgb.Get16(buf[b:])
b += 2
return v
}
// queryVersionRequest writes a QueryVersion request to a byte slice for transfer.
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func queryVersionRequest(c *xgb.Conn) []byte {
size := 4
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
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buf[b] = 0 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
return buf
}
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// RectanglesCookie is a cookie used only for Rectangles requests.
type RectanglesCookie struct {
*xgb.Cookie
}
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// Rectangles sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func Rectangles(c *xgb.Conn, Operation Op, DestinationKind Kind, Ordering byte, DestinationWindow xproto.Window, XOffset, YOffset int16, Rectangles []xproto.Rectangle) RectanglesCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Rectangles' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
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cookie := c.NewCookie(false, false)
c.NewRequest(rectanglesRequest(c, Operation, DestinationKind, Ordering, DestinationWindow, XOffset, YOffset, Rectangles), cookie)
return RectanglesCookie{cookie}
}
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// RectanglesChecked sends a checked request.
// If an error occurs, it can be retrieved using RectanglesCookie.Check.
func RectanglesChecked(c *xgb.Conn, Operation Op, DestinationKind Kind, Ordering byte, DestinationWindow xproto.Window, XOffset, YOffset int16, Rectangles []xproto.Rectangle) RectanglesCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
if _, ok := c.Extensions["SHAPE"]; !ok {
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panic("Cannot issue request 'Rectangles' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
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cookie := c.NewCookie(true, false)
c.NewRequest(rectanglesRequest(c, Operation, DestinationKind, Ordering, DestinationWindow, XOffset, YOffset, Rectangles), cookie)
return RectanglesCookie{cookie}
}
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// Check returns an error if one occurred for checked requests that are not expecting a reply.
// This cannot be called for requests expecting a reply, nor for unchecked requests.
func (cook RectanglesCookie) Check() error {
return cook.Cookie.Check()
}
// rectanglesRequest writes a Rectangles request to a byte slice for transfer.
func rectanglesRequest(c *xgb.Conn, Operation Op, DestinationKind Kind, Ordering byte, DestinationWindow xproto.Window, XOffset, YOffset int16, Rectangles []xproto.Rectangle) []byte {
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size := xgb.Pad((16 + xgb.Pad((len(Rectangles) * 8))))
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
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buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
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b += 1
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buf[b] = 1 // request opcode
b += 1
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xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
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buf[b] = byte(Operation)
b += 1
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buf[b] = byte(DestinationKind)
b += 1
buf[b] = Ordering
b += 1
b += 1 // padding
xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
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xgb.Put16(buf[b:], uint16(XOffset))
b += 2
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xgb.Put16(buf[b:], uint16(YOffset))
b += 2
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b += xproto.RectangleListBytes(buf[b:], Rectangles)
return buf
}
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// SelectInputCookie is a cookie used only for SelectInput requests.
type SelectInputCookie struct {
*xgb.Cookie
}
// SelectInput sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func SelectInput(c *xgb.Conn, DestinationWindow xproto.Window, Enable bool) SelectInputCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
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if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'SelectInput' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(false, false)
c.NewRequest(selectInputRequest(c, DestinationWindow, Enable), cookie)
return SelectInputCookie{cookie}
}
// SelectInputChecked sends a checked request.
// If an error occurs, it can be retrieved using SelectInputCookie.Check.
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func SelectInputChecked(c *xgb.Conn, DestinationWindow xproto.Window, Enable bool) SelectInputCookie {
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c.ExtLock.RLock()
defer c.ExtLock.RUnlock()
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if _, ok := c.Extensions["SHAPE"]; !ok {
panic("Cannot issue request 'SelectInput' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
}
cookie := c.NewCookie(true, false)
c.NewRequest(selectInputRequest(c, DestinationWindow, Enable), cookie)
return SelectInputCookie{cookie}
}
// Check returns an error if one occurred for checked requests that are not expecting a reply.
// This cannot be called for requests expecting a reply, nor for unchecked requests.
func (cook SelectInputCookie) Check() error {
return cook.Cookie.Check()
}
// selectInputRequest writes a SelectInput request to a byte slice for transfer.
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func selectInputRequest(c *xgb.Conn, DestinationWindow xproto.Window, Enable bool) []byte {
size := 12
b := 0
buf := make([]byte, size)
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c.ExtLock.RLock()
buf[b] = c.Extensions["SHAPE"]
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c.ExtLock.RUnlock()
b += 1
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buf[b] = 6 // request opcode
b += 1
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
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xgb.Put32(buf[b:], uint32(DestinationWindow))
b += 4
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if Enable {
buf[b] = 1
} else {
buf[b] = 0
}
b += 1
b += 3 // padding
return buf
}